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Photosynthesis (A-level only)
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Big picture and chloroplast sites

Big picture and chloroplast sites

Chloroplast cross-section showing grana, thylakoid membrane, thylakoid lumen, stroma, and the locations of the light-dependent reaction and Calvin cycle Photosynthesis transfers light energy into chemical energy stored in organic molecules. At A level, it is best treated as two linked stages: the light-dependent reaction makes ATP and reduced NADP, and the Calvin cycle uses them to reduce carbon dioxide.

Photosynthesis (A-level only) Lesson

  1. A Level
  2. /Biology
  3. /Photosynthesis (A-level only)

Step-by-step lessons covering AQA A Level Biology Photosynthesis (A-level only) for A Level Biology. Each lesson works through exam-style questions in Paper 1, Paper 2 and Paper 3 format. Build a strong foundation in cell biology and biochemistry early on, since later topics on genetics, ecology and physiology all draw on these core concepts.